CN219984366U

CN219984366U - Denitration device based on SNCR

Info

Publication number: CN219984366U
Application number: CN202321170230.3U
Authority: CN
Inventors: 陶巍
Original assignee: Hefei Zhongya Environmental Protection Technology Co ltd
Current assignee: Hefei Zhongya Environmental Protection Technology Co ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-11-10
Anticipated expiration: 2033-05-16

Abstract

The utility model discloses a denitration device based on SNCR, and relates to the technical field of denitration. The automatic rebound device comprises a reaction chamber for reaction and a combustion control console for controlling combustion temperature, wherein the reaction chamber consists of a combustion bin and a collecting bin, an automatic rebound assembly is arranged at the middle positions of the combustion bin of the reaction chamber and the collecting bin of the reaction chamber, an input pipe is arranged at the lower end of the combustion bin in the reaction chamber, an anti-backflow mechanism is arranged at the pipe orifice of the input pipe, and a discharge pipe is arranged at one side of the collecting bin in the reaction chamber. According to the utility model, atomized ammonia water is sprayed out by the spray gun in the reaction chamber to react with the nitrogen oxides, so that the reaction effect is achieved, the support frame is arranged in the middle of the reaction chamber, the reaction net is arranged in the middle of the support frame, the reaction net is utilized to further react with the flue gas, the incomplete reaction of the nitrogen oxides is prevented from being missed, and under the action of the spring, the baffle plate, the threaded rod frame and the support frame are taken out to automatically pop up.

Description

Denitration device based on SNCR

Technical Field

The utility model belongs to the technical field of denitration, and particularly relates to a denitration device based on SNCR.

Background

The NOx emission concentration of the novel dry cement production system in China is 500-1200 mg/Nm3; for the burning of anthracite and fuel with higher nitrogen content, and the addition of cement enterprises which calcine high-grade cement clinker, special cement clinker and high-silicon or high-saturation ratio requirement, the emission concentration of NOx is far more than 400mg/Nm3, a large amount of nitrogen oxides can be generated in the calcination process of the cement clinker, the nitrogen oxides are one of main factors of atmospheric pollution, SNCR is one of prevention of treating the nitrogen oxides, and the selective non-catalytic reduction denitration technology of cement is adopted. The SNCR technology needs denitration equipment, and the existing denitration device has large volume, is incomplete in denitration, and is simply reacted with the nitrogen oxide by ammonia water, and a common denitration device input pipe is easy to generate reflux.

Disclosure of Invention

The utility model aims to provide a denitration device based on SNCR, which solves the problems that the existing denitration device has unobvious denitration effect, poor efficiency, missing nitrogen oxides and easy backflow of a reaction chamber.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a denitration device based on SNCR, which comprises a reaction chamber for reaction and a combustion control console for controlling combustion temperature, wherein the reaction chamber consists of a combustion chamber and a collecting chamber, an automatic rebound assembly is arranged at the middle positions of the combustion chamber of the reaction chamber and the collecting chamber of the reaction chamber, an input pipe is arranged at the lower end of the combustion chamber in the reaction chamber, an anti-backflow mechanism is arranged at the pipe orifice position of the input pipe, and a discharge pipe is arranged at one side of the collecting chamber in the reaction chamber.

Preferably, the automatic rebound assembly comprises: support frame, reaction net, frame, base station, spring, threaded rod, baffle, screw hole, the opening has been seted up on the top of reaction chamber intermediate position, the base station is installed to the opening part symmetry of reaction chamber, two sets of base station and the inner wall fixed connection and the integrated into one piece of reaction chamber, two sets of the support frame is installed to base station intermediate position, the frame is installed towards the opening direction of reaction chamber to the support frame.

Preferably, the frame is square structure, the position that the frame is close to the four corners has seted up the perforation, two sets of base surface is installed two sets of screw holes respectively, and four sets of screw holes correspond each other with the perforation position on the frame, the spring is installed in the perforation outside of frame bottom surface, the one end fixed connection frame of spring, and the other end fixed connection base of spring.

Preferably, the baffle has been seted up to the frame upper end, the opening part of reaction chamber is arranged in to the baffle, and has seted up four sets of through-holes that correspond with the perforation on the frame on the baffle, the threaded rod passes the through-hole on the baffle and the perforation threaded connection on the frame and at the screw hole on the base station, support frame internally mounted has the reaction net, and has seted up the reaction tank on the support frame.

Preferably, the backflow prevention mechanism includes: ball stopper, connecting rod, stopper, elastic sheet, choke ring, the ball stopper is installed to the inside one end opening part of combustion chamber in the input tube, the ball stopper is spherical structure, the stopper is installed through the connecting rod to the one end that the ball stopper was arranged in the input tube in, connecting rod one end fixed connection ball stopper, and connecting rod other end fixed connection stopper, install choke ring between stopper and the ball stopper, choke ring is annular structure, and choke ring outside arcwall face fixed connection input tube inner wall, choke ring and input tube fixed connection and integrated into one piece.

Preferably, the connecting rod is installed to stopper one side, and the inner wall of input tube is connected through the elastic piece to the stopper opposite side, elastic piece one end fixed connection stopper, and the other end fixed connection input tube inner wall of elastic piece.

Preferably, a spray gun is arranged at the top end of a combustion bin in the reaction chamber, a combustion pipe is arranged at the middle position of the combustion bin in the reaction chamber, the combustion pipe is connected with a combustion control console, and the combustion control console is arranged outside the reaction chamber.

The utility model has the following beneficial effects:

1. according to the utility model, atomized ammonia water is sprayed out through the spray gun in the reaction chamber to react with the nitrogen oxides, the internal temperature is controlled by the combustion control console in the reaction chamber, the reaction effect is achieved, the support frame is arranged at the middle position of the reaction chamber, the reaction net is arranged at the middle position of the support frame, the reaction net is utilized to further react the flue gas, the incomplete omission of the nitrogen oxides reaction is prevented, and under the action of the spring, when the baffle plate, the threaded rod frame and the support frame are taken out, the support frame automatically pops out, and the replacement is convenient.

2. According to the utility model, the input pipe is arranged in the reaction chamber, the ball plug is arranged at the pipe head of the input pipe, objects in the reaction chamber are prevented from flowing into the input pipe, backflow is prevented, the ball plug is driven to move towards the reaction chamber by the pressure in the input pipe, and when the pressure in the reaction chamber is the same as that in the input pipe, the elastic piece drives the ball plug to rebound, the ball plug plugs the blocking ring, backflow is prevented, and safety is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a SNCR-based denitration device of the present utility model;

FIG. 2 is a cross-sectional view of another angle of the overall structure of an SNCR-based denitration device of the present utility model;

fig. 3 is a schematic structural diagram of a support frame in a denitration device based on SNCR according to the present utility model;

fig. 4 is a schematic structural diagram of a ball plug in an SNCR-based denitration device according to the present utility model;

fig. 5 is a cross-sectional view of a ball plug structure in a denitration device based on SNCR according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows: 1. a reaction chamber; 2. a discharge pipe; 3. an input tube; 4. a spray gun; 5. a combustion console; 6. a reaction net; 7. a frame; 8. a base station; 9. a spring; 10. a threaded rod; 11. a baffle; 12. a support frame; 13. a threaded hole; 14. a ball plug; 15. a connecting rod; 16. a limiting block; 17. an elastic sheet; 18. a choke ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "middle," "outer," "inner," "lower," "surrounding," and the like indicate orientations or positional relationships, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Example 1

Referring to fig. 1-3, the utility model discloses a denitration device based on SNCR, which comprises a reaction chamber 1 for reaction and a combustion control console 5 for controlling combustion temperature, wherein the reaction chamber 1 comprises a combustion chamber and a collecting chamber, an automatic rebound assembly is arranged in the middle of the combustion chamber of the reaction chamber 1 and the collecting chamber of the reaction chamber 1, an input pipe 3 is arranged at the lower end of the combustion chamber in the reaction chamber 1, an anti-backflow mechanism is arranged at the pipe orifice of the input pipe 3, and a discharge pipe 2 is arranged at one side of the collecting chamber in the reaction chamber 1.

Wherein, automatic resilience subassembly includes: support frame 12, reaction net 6, frame 7, abutment 8, spring 9, threaded rod 10, baffle 11, screw hole 13, the opening has been seted up on the top of reaction chamber 1 intermediate position, abutment 8 is installed to the opening part symmetry of reaction chamber 1, two sets of abutment 8 and the inner wall fixed connection and the integrated into one piece of reaction chamber 1, two sets of support frame 12 is installed to abutment 8 intermediate position, frame 7 is installed to support frame 12 towards the opening direction of reaction chamber 1.

The frame 7 is of a square structure, through holes are formed in positions, close to four corners, of the frame 7, two groups of threaded holes 13 are formed in the surfaces of the base 8, the positions of the four groups of threaded holes 13 correspond to the positions of the through holes in the frame 7, springs 9 are arranged outside the through holes in the bottom surface of the frame 7, one ends of the springs 9 are fixedly connected with the frame 7, and the other ends of the springs 9 are fixedly connected with the base 8.

Wherein baffle 11 has been seted up to frame 7 upper end, the opening part of reaction chamber 1 is arranged in to baffle 11, and has seted up four sets of through-holes that correspond with the perforation on the frame 7 on the baffle 11, threaded rod 10 passes through the through-hole on baffle 11 and the perforation threaded connection on the frame 7 in the screw hole 13 on the base station 8, support frame 12 internally mounted has reaction net 6, and has seted up the reaction tank on the support frame 12.

The top end of a combustion bin in the reaction chamber 1 is provided with a spray gun 4, the middle position of the combustion bin in the reaction chamber 1 is provided with a combustion pipe, the combustion pipe is connected with a combustion control console 5, and the combustion control console 5 is arranged outside the reaction chamber 1.

Wherein, utilize the combustion control platform 5 control inside temperature in the reaction chamber 1, reach the reaction effect, support frame 12 is installed to reaction chamber 1 intermediate position, and reaction net 6 is installed to support frame 12 intermediate position, utilizes reaction net 6 to further react the flue gas, prevents that nitrogen oxide reaction from incompletely producing the omission, and through the effect of spring 9, when taking out baffle 11 and threaded rod 10 frame 7 and support frame 12 automatic pop-up, conveniently change.

Example two

Referring to fig. 4 and 5, the present utility model is a denitration device based on SNCR, further including a backflow prevention mechanism for preventing backflow of the reaction chamber on the basis of the first embodiment, wherein the backflow prevention mechanism includes: ball stopper 14, connecting rod 15, stopper 16, elastic sheet 17, choke ring 18, the ball stopper 14 is installed to the inside one end opening part of combustion chamber is arranged in to the input tube 3, ball stopper 14 is spherical structure, stopper 16 is installed through connecting rod 15 to the one end that ball stopper 14 was arranged in the input tube 3, connecting rod 15 one end fixed connection ball stopper 14, and connecting rod 15 other end fixed connection stopper 16, install choke ring 18 between stopper 16 and the ball stopper 14, choke ring 18 is annular structure, and choke ring 18 outside arcwall face fixed connection input tube 3 inner wall, choke ring 18 and input tube 3 fixed connection and integrated into one piece.

The connecting rod 15 is installed on one side of the limiting block 16, the other side of the limiting block 16 is connected with the inner wall of the input pipe 3 through the elastic piece 17, one end of the elastic piece 17 is fixedly connected with the limiting block 16, and the other end of the elastic piece 17 is fixedly connected with the inner wall of the input pipe 3.

Wherein, install input tube 3 in reaction chamber 1, the tube head department of input tube 3 installs ball stopper 14, prevents that the inside object of reaction chamber 1 from flowing into in input tube 3, prevents backward flow, and the inside pressure of input tube 3 drives ball stopper 14 and moves towards reaction chamber 1 in greatly, and when reaction chamber 1 is the same with the internal pressure of input tube 3 under the condition that elastic piece 17 drives ball stopper 14 and kick-backs, ball stopper 14 blocks up choke ring 18, prevents backward flow, improves the security.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. Denitration device based on SNCR, including reaction chamber (1) and the combustion control cabinet (5) of control combustion temperature that are used for the reaction, its characterized in that: the reaction chamber (1) is composed of a combustion chamber and a collecting chamber, an automatic rebound assembly is arranged at the middle position of the combustion chamber of the reaction chamber (1) and the collecting chamber of the reaction chamber (1), an input pipe (3) is arranged at the lower end of the combustion chamber in the reaction chamber (1), an anti-backflow mechanism is arranged at the pipe orifice of the input pipe (3), and a discharge pipe (2) is arranged at one side of the collecting chamber in the reaction chamber (1).

2. The SNCR-based denitration device according to claim 1, wherein: the automatic rebound assembly comprises: support frame (12), reaction net (6), frame (7), base station (8), spring (9), threaded rod (10), baffle (11), screw hole (13), the opening has been seted up on the top of reaction chamber (1) intermediate position, base station (8) are installed to the opening part symmetry of reaction chamber (1), two sets of inner wall fixed connection and integrated into one piece of base station (8) and reaction chamber (1), two sets of support frame (12) are installed to base station (8) intermediate position, frame (7) are installed towards the opening direction of reaction chamber (1) to support frame (12).

3. The SNCR-based denitration device according to claim 2, wherein: the frame (7) is square structure, the position that frame (7) is close to the four corners has been seted up and has been perforated, two sets of base (8) surface mounting has two sets of screw holes (13) respectively, and the perforation position on four sets of screw holes (13) and frame (7) corresponds each other, spring (9) are installed in the perforation outside of frame (7) bottom surface, one end fixed connection frame (7) of spring (9), and the other end fixed connection base (8) of spring (9).

4. A SNCR-based denitration device according to claim 3, wherein: baffle (11) have been seted up to frame (7) upper end, the opening part of reaction chamber (1) is arranged in to baffle (11), and has seted up four sets of through-holes that correspond with the perforation on frame (7) on baffle (11), threaded rod (10) pass through the through-hole on baffle (11) and the perforation threaded connection on frame (7) in screw hole (13) on base (8), support frame (12) internally mounted has reaction net (6), and has seted up the reaction tank on support frame (12).

5. The SNCR-based denitration device according to claim 1, wherein: the backflow prevention mechanism includes: ball stopper (14), connecting rod (15), stopper (16), elastic sheet (17), choke ring (18), ball stopper (14) are installed in the inside one end opening part of combustion chamber in input tube (3), ball stopper (14) are spherical structure, stopper (16) are installed through connecting rod (15) to the one end that ball stopper (14) were arranged in input tube (3), connecting rod (15) one end fixed connection ball stopper (14), and connecting rod (15) other end fixed connection stopper (16), install choke ring (18) between stopper (16) and ball stopper (14), choke ring (18) are annular structure, and choke ring (18) outside arcwall fixed connection input tube (3) inner wall, choke ring (18) and input tube (3) fixed connection and integrated into one piece.

6. The SNCR-based denitration device according to claim 5, wherein: connecting rod (15) are installed to stopper (16) one side, and the inner wall of input tube (3) is connected through elastic piece (17) to stopper (16) opposite side, elastic piece (17) one end fixed connection stopper (16), and the other end fixed connection input tube (3) inner wall of elastic piece (17).

7. The SNCR-based denitration device according to claim 1, wherein: the spray gun (4) is installed on the top end of a combustion bin in the reaction chamber (1), a combustion pipe is installed at the middle position of the combustion bin in the reaction chamber (1), the combustion pipe is connected with a combustion control console (5), and the combustion control console (5) is arranged on the outer side of the reaction chamber (1).